It wasn’t a full-fledged endorsement, but President Donald Trump gave the clearest indication yet on who he considered to be his heir. During an executive order signing Tuesday in the South Court Auditorium, the president was asked about comments made Saturday by Secretary of State Marco Rubio, who called Vice President J.D. Vance a ‘great nominee’ for the Republican Party.

‘You could clear the entire Republican field right now,’ Trump was told by Fox News’ Peter Doocy. ‘Do you agree that the heir-apparent to MAGA is J.D. Vance ?’ the president was asked. Vance had appeared alongside Trump at the event – an executive order signing to create a 2028 Los Angeles Olympics task force – but had stepped offstage when the query was asked. ‘Well, I think most likely,’ Trump answered. ‘In all fairness, he’s the vice president. I think Marco is also somebody that maybe would get together with J.D. in some form.’

Rubio, 54, had run for president before, he was one of Trump’s many rivals during the 2016 GOP primary. Vance, at just 41, would count among the youngest presidents in history, if he were elected in three years. ‘I also think we have incredible people, some of the people on the stage right here,’ Trump also said.

The Olympics task force is made up of a number of Cabinet heads, including Department of Homeland Security Secretary Kristi Noem, who was among those Trump considered last year to be his new VP. The former South Dakota governor’s name has long been thrown around as a potential presidential contender. Attorney General Pam Bondi was also on hand.

Trump is limited to serving only two terms by the U.S. Constitution. During an appearance Tuesday morning on CNBC’s Squawk Box, the 78-year-old president said he would ‘probably not’ run for a third term. ‘I’d like to run,’ Trump said. ‘I have the best poll numbers I’ve ever had,’ he added.

In order for Trump to run again, the Constitution would have to be amended and the 22nd Amendment would have to be scrapped. One Trump-aligned GOP lawmaker pitched changing the amendment, so a president could run for a third term if they had served non-consecutive terms. Historically, only Trump and President Grover Cleveland have fit this bill.

That would allow Trump to run for a third term, but not Democratic President Barack Obama, who’s only 64 years old. During his Q&A with reporters, Trump suggested it was too early to be talking 2028. ‘So it’s too early obviously to talk about it but certainly he’s doing a great job and he would be probably favored at this point,’ Trump said of Vance.